National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Martinsburg IA

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, clear, with a low around 59. Southeast wind around 5 mph.

    Low: 59 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, sunny, with a high near 83. South wind 5 to 10 mph.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 65. South wind around 10 mph.

    Low: 65 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A slight chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 82. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 30%.

    High: 82 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers. Partly sunny, with a high near 78.

    High: 78 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85. Breezy.

    High: 85 °F

    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely after 1am. Partly cloudy, with a low around 65. Chance of precipitation is 70%.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, clear, with a low around 59. Southeast wind around 5 mph.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 83. South wind 5 to 10 mph.
Friday Night
Increasing clouds, with a low around 65. South wind around 10 mph.
Saturday
A slight chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 82. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 60.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 78.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 85. Breezy.
Monday Night
A chance of showers and thunderstorms, then showers likely after 1am. Partly cloudy, with a low around 65. Chance of precipitation is 70%.
Tuesday
Showers likely. Partly sunny, with a high near 77. Chance of precipitation is 70%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Wednesday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 59.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Martinsburg IA
 41.18°N 92.27°W (Elev. 810 ft)
Last Update:
10:21 pm CDT Sep 10, 2026
Forecast Valid:
11pm CDT Sep 10, 2026-6pm CDT Sep 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation